package com.qd.panda.service.park;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cdqidi.constant.ConstantDto;
import com.cdqidi.db.BaseService;
import com.cdqidi.dto.CacheKey;
import com.cdqidi.excel.ExcelExport;
import com.cdqidi.excel.util.ExportPage;
import com.cdqidi.exception.ApiException;
import com.cdqidi.util.RedisTemplateUtil;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.qd.common.panda.domain.entity.carpark.CarParkFeeDTO;
import com.qd.common.sys.enums.BaseTableEnum;
import com.qd.panda.mapper.park.CarParkFeeMapper;
import com.qd.panda.model.CarParkFee;
import com.qd.system.service.dict.MbUtil;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.*;

import static java.util.stream.Collectors.toList;
import static java.util.stream.Collectors.toSet;

/**
 * 停车场费用设置
 *
 * @author sjk
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class CarParkFeeService extends BaseService<CarParkFeeMapper, CarParkFee> {

    private static final String PREFIX_ID = "panda_car_park_fee_sid_{0}";
    private static final String PREFIX_UNIQUE_PANDA_CAR = "panda_car_park_fee_pId_{0}";

    private final RedisTemplateUtil<CarParkFee> redisTemplateUtil;
    private final ObjectMapper objectMapper;
    @Resource
    private HttpServletResponse response;


    /**
     * 保存
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CarParkFeeDTO save(CarParkFeeDTO dto) {
        checkUnique(dto);
        checkMb(dto);
        final CarParkFee model = dtoToModel(dto);
        try {
            if (super.save(model)) {
                return modelToDto(model);
            }
            throw new ApiException("添加失败");
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 修改
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CarParkFeeDTO update(CarParkFeeDTO dto) {
        checkUnique(dto);
        checkMb(dto);
        final CarParkFee model = dtoToModel(dto);
        final CarParkFee historyModel = Optional.ofNullable(getById(dto.getSid())).orElseThrow(() -> new ApiException("ID不存在,不能更新"));
        try {
            if (super.updateById(model)) {
                return modelToDto(model);
            }
            throw new ApiException("更新失败");
        } finally {
            clearCache(historyModel);
            clearCache(model);
            historyModel.freeData();
            model.freeData();
        }
    }

    /**
     * 批量添加
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void saveBatch(List<CarParkFee> mList) {
        try {
            if (!super.saveBatch(mList)) {
                throw new ApiException("批量添加失败");
            }
        } finally {
            clearCaches(mList);
        }
    }

    /**
     * 批量更新
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void updateBatchIds(List<CarParkFee> mList) {
        final List<String> ids = mList.stream().map(CarParkFee::getSid).collect(toList());
        final List<CarParkFee> historyModelList = checkIds(ids);
        try {
            if (!super.updateBatchById(mList)) {
                throw new ApiException("批量更新失败");
            }
        } finally {
            clearCaches(historyModelList);
            historyModelList.clear();
            ids.clear();
        }
    }

    /**
     * 删除，单个
     *
     * @param sid 主键
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeById(String sid) {
        final CarParkFee model = Optional.ofNullable(getById(sid)).orElseThrow(() -> new ApiException("数据不存在,不能删除"));
        try {
            if (!super.removeById(sid)) {
                throw new ApiException("删除失败");
            }
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 根据传入对象构建查询参数，判断是否存在
     *
     * @param dto 参数
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExists(CarParkFeeDTO dto) {
        final QueryWrapper<CarParkFee> queryWrapper = createQueryWrapper(dto);
        final boolean exists = super.count(queryWrapper) > 0;
        queryWrapper.clear();
        return exists;
    }

    /**
     * 根据主键判断数据是否存在
     *
     * @param sid 主键
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExistsById(String sid) {
        boolean exists = false;
        if (StringUtils.hasLength(sid)) {
            final CarParkFee model = getById(sid);
            exists = (null != model);
            if (exists) {
                model.freeData();
            }
        }
        return exists;
    }

    /**
     * 根据主键获取数据
     *
     * @param sid 主键
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CarParkFee getById(String sid) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, sid);
        return redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getById(sid), CarParkFee.class);
    }

    /**
     * 根据主键获取数据
     *
     * @param sid 主键
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CarParkFeeDTO getByIdDto(String sid) {
        return Optional.ofNullable(getById(sid)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CarParkFee getOne(CarParkFeeDTO dto) {
        final QueryWrapper<CarParkFee> queryWrapper = createQueryWrapper(dto);
        CarParkFee model = super.getOne(queryWrapper);
        queryWrapper.clear();
        return model;
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CarParkFeeDTO getOneDto(CarParkFeeDTO dto) {
        return Optional.ofNullable(getOne(dto)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据
     */
    @Transactional(readOnly = true)
    public List<CarParkFee> getList(CarParkFeeDTO dto) {
        final QueryWrapper<CarParkFee> queryWrapper = createQueryWrapper(dto);
        final List<CarParkFee> list = super.list(queryWrapper);
        queryWrapper.clear();
        return list;
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据，转换成页面对象
     */
    @Transactional(readOnly = true)
    public List<CarParkFeeDTO> getListDto(CarParkFeeDTO dto) {
        return modelToDtoList(getList(dto));
    }

    /**
     * 分页数据
     *
     * @param page 分页对象
     * @param dto  查询参数
     * @return 分页信息
     */
    @Transactional(readOnly = true)
    public IPage<CarParkFeeDTO> page(Page<CarParkFee> page, CarParkFeeDTO dto) {
        final QueryWrapper<CarParkFee> queryWrapper = createQueryWrapper(dto, "car.");
        final IPage<CarParkFeeDTO> iPage = baseMapper.page(page, queryWrapper);
        queryWrapper.clear();
        return iPage;
    }

    /**
     * 导出Excel
     *
     * @param query 查询条件
     * @throws IOException 异常
     */
    @Transactional(readOnly = true)
    public void export(CarParkFeeDTO query) throws IOException {
        final ExportPage<CarParkFee, CarParkFeeDTO> exportPage = new ExportPage<>();
        final List<CarParkFeeDTO> list = exportPage.getAllForPage(page -> page(page, query).getRecords());
        try {
            ExcelExport.downloadExcel(response, CarParkFeeDTO.class, () -> list);
        } catch (IOException e) {
            log.error("导出失败", e);
            throw new ApiException("导出失败");
        }
    }

    /**
     * 根据唯一性索引获得数据
     * <p>
     * param pId
     *
     * @return 单条数据
     */
    @Transactional(readOnly = true)
    public CarParkFee getUniqueByPId(String pId) {
        final QueryWrapper<CarParkFee> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("p_id", pId);
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_UNIQUE_PANDA_CAR, pId);
        final CarParkFee model = redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getOne(queryWrapper, false), CarParkFee.class);
        queryWrapper.clear();
        return model;
    }

    /**
     * 验证唯一性索引
     *
     * @param dto 页面对象
     */
    private void checkUnique(CarParkFeeDTO dto) {
        CarParkFee model = getUniqueByPId(dto.getPId());
        if (null != model) {
            checkUnique(dto, model);
        }
    }

    /**
     * 验证唯一性索引
     *
     * @param dto   页面对象
     * @param model 根据约束字段查询出来的数据库对象
     */
    private void checkUnique(CarParkFeeDTO dto, CarParkFee model) {
        if (!StringUtils.hasLength(dto.getPId())) {
            throw new ApiException("数据已存在，请勿重复添加");
        }
        if (!dto.getPId().equals(model.getPId())) {
            throw new ApiException("数据已存在，请勿重复添加");
        }
    }

    /**
     * 清空缓存
     *
     * @param model 数据库对象
     */
    public void clearCache(CarParkFee model) {
        if (null == model) {
            return;
        }
        String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getSid());
        redisTemplateUtil.deleteByKey(key);
        key = RedisTemplateUtil.getRedisCacheKey(PREFIX_UNIQUE_PANDA_CAR, model.getPId());
        redisTemplateUtil.deleteByKey(key);
    }

    /**
     * 批量清空缓存
     *
     * @param list 数据库对象
     */
    public void clearCaches(List<CarParkFee> list) {
        if (null == list || list.isEmpty()) {
            return;
        }
        List<String> ids = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getSid())).collect(toList());
        if (!ids.isEmpty()) {
            redisTemplateUtil.deleteByKey(ids);
            ids.clear();
        }
        Set<String> uniqueIds = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_UNIQUE_PANDA_CAR, model.getPId())).collect(toSet());
        if (!uniqueIds.isEmpty()) {
            redisTemplateUtil.deleteByKey(uniqueIds);
            uniqueIds.clear();
        }
    }


    /**
     * 数据库对象转页面对象
     *
     * @param model 数据库对象
     * @return 页面对象
     */
    public CarParkFeeDTO modelToDto(CarParkFee model) {
        if (null == model) {
            return null;
        }
        final CarParkFeeDTO dto = new CarParkFeeDTO();
        dto.setSid(model.getSid());
        dto.setNote(model.getNote());
        Optional.ofNullable(model.getRule()).ifPresent(r -> {
            try {
                JsonNode jsonNode = objectMapper.readTree(r);
                dto.setRule(jsonNode);
            } catch (JsonProcessingException e) {
                throw new ApiException(e);
            }
        });
        dto.setPId(model.getPId());
        dto.setBillRule(model.getBillRule());
        buildDisplay(dto);
        return dto;
    }

    /**
     * 页面对象转数据库对象
     *
     * @param dto 页面对象
     * @return 数据库对象
     */
    public CarParkFee dtoToModel(CarParkFeeDTO dto) {
        if (null == dto) {
            return null;
        }
        final CarParkFee model = new CarParkFee();
        model.setSid(dto.getSid());
        model.setNote(dto.getNote());
        Optional.ofNullable(dto.getRule()).ifPresent(r -> model.setRule(r.toString()));
        model.setPId(dto.getPId());
        model.setBillRule(dto.getBillRule());
        return model;
    }

    /**
     * 码表转换
     *
     * @param dto 页面对象
     */
    public void buildDisplay(CarParkFeeDTO dto) {
        dto.setBillRuleDisplay(MbUtil.idToDisplay(dto.getBillRule()));
    }

    /**
     * 数据库对象转页面对象
     *
     * @param list 数据库对象
     * @return 页面对象
     */
    public List<CarParkFeeDTO> modelToDtoList(List<CarParkFee> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::modelToDto).collect(toList());
    }

    /**
     * 页面对象转数据库对象
     *
     * @param list 页面对象
     * @return 数据库对象
     */
    public List<CarParkFee> dtoToModelList(List<CarParkFeeDTO> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::dtoToModel).collect(toList());
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto 查询参数，不为空的属性会被自动加入
     */
    public QueryWrapper<CarParkFee> createQueryWrapper(CarParkFeeDTO dto) {
        return createQueryWrapper(dto, "");
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto        查询参数，不为空的属性会被自动加入
     * @param tableAlias 表别名
     */
    public QueryWrapper<CarParkFee> createQueryWrapper(CarParkFeeDTO dto, String tableAlias) {
        final QueryWrapper<CarParkFee> queryWrapper = new QueryWrapper<>();
        if (null != dto) {
            if (StringUtils.hasLength(tableAlias)) {
                if (tableAlias.charAt(tableAlias.length() - 1) != '.') {
                    tableAlias += ".";
                }
            }
            if (StringUtils.hasLength(dto.getNote())) {
                queryWrapper.eq(tableAlias + "note", dto.getNote());
            }
            if (StringUtils.hasLength(dto.getPId())) {
                queryWrapper.eq(tableAlias + "p_id", dto.getPId());
            }
            if (StringUtils.hasLength(dto.getBillRule())) {
                queryWrapper.eq(tableAlias + "bill_rule", dto.getBillRule());
            }
        }
        return queryWrapper;
    }

    /**
     * 批量检查主键在数据库中是否存在
     *
     * @param ids 主键集合
     */
    public List<CarParkFee> checkIds(List<String> ids) {
        if (null == ids || ids.isEmpty()) {
            throw new ApiException("ids不能为空");
        }
        final List<CarParkFee> list = super.listByIds(ids);
        if (list.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(ids.toArray()));
        }
        if (ids.size() == list.size()) {
            return list;
        }
        List<String> dbIds = list.stream().map(CarParkFee::getSid).collect(toList());
        final List<String> notExistsList = ids.stream().filter(id -> !dbIds.contains(id)).collect(toList());
        dbIds.clear();
        if (!notExistsList.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(notExistsList.toArray()));
        }
        return list;
    }

    private void checkMb(CarParkFeeDTO dto) {
        if (MbUtil.isNotExists(dto.getBillRule(), BaseTableEnum.CAR_PARK_BILL_RULE)) {
            throw new ApiException("停车场计费规则值错误");
        }
    }
}